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US Central Time to Canada Atlantic Time

Convert times between US Central Time (CST, UTC-6:00) and Canada Atlantic Time (AST, UTC-4:00). Canada Atlantic Time is 2 hours ahead of US Central Time in standard time.

UTC-6:00 / -5:00UTC-4:00 / -3:00
Live timezone converter

UTC Offset Reference

TimezoneAbbreviationStandard offsetDST offsetCountry
US Central TimeCST / CDTUTC-6:00UTC-5:00United States
Canada Atlantic TimeAST / ADTUTC-4:00UTC-3:00Canada

* DST offset applies during summer months. Exact transition dates vary by year.

Standard Time Conversion (CSTAST)

US Central TimeCanada Atlantic Time
12:00 AM CST2:00 AM AST
6:00 AM CST8:00 AM AST
9:00 AM CST11:00 AM AST
12:00 PM CST2:00 PM AST
3:00 PM CST5:00 PM AST
6:00 PM CST8:00 PM AST
9:00 PM CST11:00 PM AST

Daylight Saving Time (DST) Notes

  • US Central Time observes DST. Clocks advance 1 hour to CDT (UTC-5:00) roughly from month 3 to 11.
  • Canada Atlantic Time observes DST. Clocks advance 1 hour to ADT (UTC-3:00) roughly from month 3 to 11.

Frequently Asked Questions

How do I convert CST to AST?
Add 2 hours to the CST time to get AST. For example, 9:00 AM CST = 11:00 AM AST.
What is the current UTC offset for US Central Time?
US Central Time is UTC-6:00 during standard time (CST) and UTC-5:00 during summer daylight saving time (CDT).
Is Canada Atlantic Time ahead or behind US Central Time?
Canada Atlantic Time is 2 hours ahead of US Central Time in standard time.
When is a good time to schedule a meeting between CST and AST?
A good overlap window is around 9:00 AM CST / 11:00 AM AST, which falls within business hours for both timezones.

Need the exact current time?

Use the live ToolsHub timezone converter to see current times, DST status, and schedule across time zones.

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